WattMaster Water Source Heat Pump, Installation & Operation Manual

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WattMaster WHP Section 4
4-14 Start-Up and Troubleshooting
4.0 Start-Up
4.1 Blink Codes for WHP Controllers
The WHP Controller uses an on board LED to indicate various diagnostic conditions
during powerup and operation. The WHP Unit LED is labeled “COMM”. Starting with
power up the LED blink codes are as follows:
•
Off for five seconds
•
COMM LED blinks the board address (Address 14 = 14 blinks)
•
Five second pause
•
Twenty second time delay - LED blinks twenty times
•
Status code is repeatedly blinked every ten seconds to indicate controller
status:
Priority No. of Blinks Status
Lowest 1 Normal Operation
- 2 Override Active
- 3 Bad Space Sensor
- 4 Heat Pump Lockout
Highest 5 Communication Failure
Figure 4-6:
Diagnostic LED Blink Codes
Only the highest priority failure code will be shown. You must correct the highest priority
alarm before other problems will be indicated.